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Pathanin Sornchangwat

Associate

Biography

Pathanin Sornchangwat is an associate in Tilleke & Gibbins’ dispute resolution department in Bangkok. He advises clients across the full spectrum of dispute-related matters, from prelitigation strategy through to trial and enforcement. His practice focuses on commercial litigation, contractual disputes, construction matters, high-net-worth family and estate administration issues, employment disputes, and criminal matters.

Pathanin works closely with both domestic and international clients to develop practical, commercially grounded strategies aligned with their legal and business objectives. He places particular emphasis on early risk assessment and mitigation, as well as on structuring effective case strategies to manage complex disputes and achieve favorable outcomes.

Pathanin holds an LLM from Columbia Law School and an LLB from Chulalongkorn University. He is a member of the Lawyers Council of Thailand.

Experience

  • Represented a global data and technology company in defending claims brought by a Thai bank in connection with a government procurement project involving software and banking system development.
  • Secured a favorable settlement for 11 Taiwanese co-insurers in Thai court proceedings against a Japanese manufacturer, pursuing THB 2.3 billion in damages arising from a transformer explosion linked to alleged defective manufacturing.
  • Advised a leading Southeast Asian securities exchange operator in a breach of contract claim against a local developer for the development, implementation, and maintenance of a shared back-office infrastructure for brokers.
  • Advised a U.S. electric bicycle manufacturer on claims for USD 30 million against a Thai supplier for contractual breaches and defective manufacturing, leading to a multi-jurisdictional product recall across the United States, Europe, and Canada.
  • Advised a multinational sports promotion company and its Thai affiliate on THB 147 million in claims arising from payment defaults under golf tournament agreements, including strategy for Thai court proceedings and ICC arbitration.
  • Successfully acted for a leading Taiwanese electronic components and power supply manufacturer in multiple civil claims against suppliers for procurement-related breaches.
  • Successfully represented a leading Southeast Asian bank in high-volume debt recovery actions against defaulting customers, alongside strategic pursuit of related criminal proceedings.
  • Represented a leading Taiwanese electronic components and power supplies manufacturer in a series of civil and criminal lawsuits against one of Thailand’s largest labor unions, including disputes over collective bargaining agreements, unfair dismissal, misconduct, and defamation.
  • Secured a favorable judgment for a leading Japanese consumer and chemical products company in defending against a series of labor lawsuits brought by former employees, in which the Thai Labor Court affirmed the company’s long-standing wage and severance calculation practices.
  • Secured a favorable judgment for a leading Thai food and beverage company in labor litigation involving the enforcement of non-compete obligations against former executive employees.
  • Successfully negotiated a favorable settlement for a multinational media company and its executives in an unfair termination claim brought by a former executive employee.
  • Advised a leading Thai bank on strategic and risk-mitigating approaches to the legally compliant closure of its branches, including the consequential business impact and implications under Thai employment law.
  • Successfully negotiated a favorable settlement for a high-net-worth individual in cross-border cases concerning divorce, child custody, and prenuptial agreement enforcement, collaborating with New York counsel to execute a settlement agreement in parallel proceedings.
  • Assisted a foreign individual in successfully obtaining the first return order by the Thai Juvenile and Family Court under the Hague Convention on the Civil Aspects of International Child Abduction, enabling the return of the children to their country of habitual residence.
  • Successfully obtained a Thai court’s estate administratorship order for a foreign client in contested cross-border probate proceedings, enabling the client’s pursuit of missing estate assets valued at over THB 400 million.
ABOUT Pathanin

Location

Languages

    Thai

    English

Education

    LLM, Columbia University

    LLB, Chulalongkorn University

Insights

May 2, 2025
Attorneys from Tilleke & Gibbins have updated the latest edition of Doing Business in Thailand, a Q&A-style guide from Thomson Reuters Practical Law that offers an overview of key legal considerations for companies operating in jurisdictions worldwide. The contribution outlines the country’s legal and regulatory framework for foreign investment and business operations and reflects the latest legislative developments. The chapter addresses the following core topics: Legal system: Structure of the courts and the codified nature of Thai law. Foreign investment: Business restrictions under the Foreign Business Act, sector-specific regulations, exchange control rules, and investment incentives. Business vehicles: Overview of partnerships, private and public limited companies, and other legal entities. Employment: Labor protections, employment contracts, foreign worker requirements, and termination procedures. Tax: Corporate and personal income tax, indirect taxes, and tax obligations for residents and non-residents. Intellectual property: Registration and enforcement of patents, trademarks, designs, and copyrights. Data protection: Key provisions of the Personal Data Protection Act and related compliance obligations. Competition law: Regulatory framework under the Trade Competition Act. Anti-bribery and corruption: Relevant legislation and enforcement mechanisms. E-commerce and digital business: Legal regime for online transactions and digital platforms. Marketing and advertising: Consumer protection laws and regulations affecting advertising and marketing practices. Product regulation and liability: Safety standards, liability regimes, and roles of enforcement authorities. Practical Law, a legal reference resource from Thomson Reuters, publishes a range of guides for hundreds of jurisdictions and practice areas. The insurance and reinsurance guide is a valuable resource for legal practitioners, covering numerous jurisdictions worldwide. To view the latest version of the guide, please visit the Practical Law website and enroll in the free Practical Law trial to gain full access.
December 4, 2024
Thailand Legal Basics, a valuable primer for foreign investors, explores all aspects of living and doing business in Thailand. Written by specialists at Tilleke & Gibbins in Bangkok, it is the only comprehensive English-language guide to the Thai legal system with a focus on the concerns of foreign business and investment.
October 1, 2024
Four of Tilleke & Gibbins’ labor and employment specialists in Bangkok have contributed the Thailand chapter to the newly issued Labor and Employment Disputes 2024, a comprehensive guide from Lexology Panoramic to labor and employment dispute resolution in various jurisdictions around the world. The Thailand chapter covers the following topics: Pre-action considerations: Key requirements, third-party funding, contingency fee arrangements Issuing a claim: Forum, territorial jurisdiction, standing, commencing claims, fees, service Defendants and legal personality: Types of claims, time limits, counterclaims Case management: Procedure, rules, amendments to claims, adding parties to proceedings, consolidating proceedings Class and collective actions: Special considerations Evidence: Witnesses, tactical considerations Interim relief: Availability, requirements Trial: Hearings conduct and typical time frames, confidentiality and public access, media reporting Elements of successful claims and burden of proof Alternative dispute resolution: Available types, requirements and expectations Enforcement: Collective employment and labor rights, enforcement of collective rights, standing Remedies and enforcement: Available remedies, assessing compensation, enforcement mechanisms Appeals: Appeal procedure and time frames, other means of challenge Update and trends: Recent cases and developments, technology developments, other issues The Thailand chapter was authored by Eric M. Meyer, Chusert Supasitthumrong, Pathanin Sornchangwat, and Chayathorn Kruatao, all in the Thailand dispute resolution and litigation team. Tilleke & Gibbins also contributed the Cambodia and Vietnam chapters to Labor and Employment Disputes 2024. The full Thailand chapter is available below as a PDF.
December 15, 2023
As part of its membership in Lex Mundi, Tilleke & Gibbins has published an updated edition of its Guide to Doing Business in Thailand for 2023. This guide outlines the key factors for starting and operating a business in the Thai market. Issues covered include: Investment incentives Financial facilities Exchange controls Import and export regulations Structures for doing business Requirements for the Establishment of a Business Operation of the Business Cessation or Termination of the Business Labor legislation, relations, and supply Tax Immigration requirements This publication is part of Lex Mundi’s Country Guides series prepared by member firms in more than 100 jurisdictions worldwide. The guides serve as a useful resource for planning international business strategy and researching new markets. The full Guide to Doing Business in Thailand is available through the button below.

Awards & Rankings

May 11, 2026
Tilleke & Gibbins has continued to show excellent performance in the recently released Benchmark Litigation 2026 rankings for dispute resolution firms in the Asia-Pacific region. The rankings include two jurisdictions where Tilleke & Gibbins is active: Thailand and Vietnam. Firm Rankings A full summary of the firm’s rankings is provided below: Thailand Commercial & Transactions – Tier 1 Government & Regulatory – Tier 1 Labor & Employment – Tier 1 Intellectual Property – Tier 1 Trade & Customs – Tier 2 Vietnam Commercial & Transactions (Foreign Firms) – Tier 1 Intellectual Property (Foreign Firms) – Tier 1 Labor & Employment (International Firms) – Highly Recommended (top tier awarded in this category) White Collar Crime – Recommended (top tier awarded in this category) Energy & Construction (Foreign Firms) – Tier 2 International Arbitration – Tier 2 Individual Rankings The 2026 edition also recognizes 12 Tilleke & Gibbins lawyers in Thailand—more than any other firm in the jurisdiction—and four in Vietnam. Thailand Alongkorn Tongmee – Trade & Customs Chitchai Punsan – Commercial & Transactions Chusert Supasitthumrong – Labor & Employment John Frangos – Commercial & Transactions Noppramart Thammateeradaycho – Shipping Nuttaphol Arammuang – Intellectual Property Piyawat Vitooraporn – Commercial & Transactions Pongpalin Chantrapirom – Commercial & Transactions Suebsiri Taweepon – Intellectual Property Suruswadee Jaimsuwan – Commercial & Transactions Thawat Damsa-ard – Commercial & Transactions Tiziana Sucharitkul – Commercial & Transactions, Government & Regulatory Vietnam Duc Anh Tran – Commercial & Transactions Linh Duy Mai – Intellectual Property Loc Xuan Le – Intellectual Property Tu Anh Tran – Commercial & Transactions Benchmark Litigation’s annual research is based on interviews with dispute resolution specialists and clients, as well as analysis of recent casework and market developments. To view the full results, please visit the Benchmark Litigation websites for Thailand and Vietnam.

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